Welcome to Frog Forum!
What size is your other home? If not bigger than an 18x18x24, I suggest you get another 18x18x24 and house your whites separate from the white lips. Mixing species is never advised (especially in this size tank). The frogs will eventually poison one another
I personally believe 2 frogs in each is max occupancy. But, because you have 3 whites, it would be fine to house them together and the 2 white lips together, in two separate tanks.
Curious, how long have these frogs lived together?